Sonochemical co-deposition of antibacterial nanoparticles and dyes on textiles

• Ilana Perelshtein,
• Anat Lipovsky,
• Nina Perkas,
• Tzanko Tzanov and
• Aharon Gedanken

Beilstein J. Nanotechnol. 2016, 7, 1–8, doi:10.3762/bjnano.7.1

• nanoparticles on the fabric surface. It was shown that the antibacterial behavior of the metal oxides was not influenced by the presence of the dyes. Higher K/S values were achieved by sonochemical deposition of the dyes in comparison to a dip-coating (exhaustion) process. The stability of the antibacterial

• undergo chemical changes. A control dyeing was carried out by dip-coating the fabrics in an alkaline (ammonia) dye solution for 60 min, the same time as the sonochemical coating reaction. Higher K/S values were obtained for the sonochemically ZnO-coated samples as compared to the regular dip-coated

Nanostructured surfaces by supramolecular self-assembly of linear oligosilsesquioxanes with biocompatible side groups

• Maria Nowacka,
• Anna Kowalewska and
• Tomasz Makowski

Beilstein J. Nanotechnol. 2015, 6, 2377–2387, doi:10.3762/bjnano.6.244

• -acetylcysteine, cysteine hydrochloride or glutathione) can form specific, self-assembled nanostructures when deposited on mica by dip coating. The mechanism of adsorption is based on molecule-to-substrate interactions between carboxylic groups and mica. Intermolecular cross-linking by hydrogen bonds was also

• cyclic tetravinylsiloxanetetraols [50]. The thiol-ene additions were photoinitiated by 2,2-dimethoxy-2-phenylacetophenone (DMPA) (full experimental data can be found in Supporting Information File 1). Thin layers of LPSQ-COOH/X were deposited onto freshly cleaved mica substrates by dip coating from their

Effect of SiN_x diffusion barrier thickness on the structural properties and photocatalytic activity of TiO₂ films obtained by sol–gel dip coating and reactive magnetron sputtering

• Mohamed Nawfal Ghazzal,
• Eric Aubry,
• Nouari Chaoui and
• Didier Robert

Beilstein J. Nanotechnol. 2015, 6, 2039–2045, doi:10.3762/bjnano.6.207

• detail elsewhere [14]. Sol–gel dip coating of TiO2/SiNx/SLG The TiO2 films prepared using the sol–gel process is described in detail elsewhere [7]. Briefly, titanium(IV) isopropoxide is used as a precursor to synthesize the TiO2 sol via an acid-catalyzed sol–gel process at room temperature by dissolving

• dropwise, followed by magnetic agitation for an additional 2 h. The experiment was carried out under argon atmosphere. The dip-coating process is used to grow the TiO2 films on SLG and on SLG coated with a SiNx diffusion barrier. The substrates were dipped into and pulled out of the sol at a speed of 11.5

Synergic combination of the sol–gel method with dip coating for plasmonic devices

• Cristiana Figus,
• Maddalena Patrini,
• Francesco Floris,
• Lucia Fornasari,
• Paola Pellacani,
• Gerardo Marchesini,
• Andrea Valsesia,
• Flavia Artizzu,
• Daniela Marongiu,
• Michele Saba,
• Franco Marabelli,
• Andrea Mura,
• Giovanni Bongiovanni and
• Francesco Quochi

Beilstein J. Nanotechnol. 2015, 6, 500–507, doi:10.3762/bjnano.6.52

• fine-tuning of the silica layer thickness on the plasmonic structure were studied. Control of the silica coating thickness was achieved through a combined approach involving sol–gel and dip-coating techniques. The silica films were characterized using spectroscopic ellipsometry, contact angle

• ]. However, a fine control of the layer thickness is also very important for plasmonic–photonic coupled devices [10][16][17][18][19]. For this purpose, the use of the sol–gel approach combined with the dip-coating technique to produce a silica layer is a suitable method for the modification of a plasmonic

• the silica layer thickness on a plasmonic structure were studied in this work. The plasmonic nanostructures were coated with conformal silica layers of controlled thickness using an optimized, combined sol–gel/dip-coating technique. The effects of the silica layer on the optical properties of the

Low cost, p-ZnO/n-Si, rectifying, nano heterojunction diode: Fabrication and electrical characterization

• Vinay Kabra,
• Lubna Aamir and
• M. M. Malik

Beilstein J. Nanotechnol. 2014, 5, 2216–2221, doi:10.3762/bjnano.5.230

• an n-Si substrate using a dip coating technique. The device was then characterized by current–voltage (I–V) and capacitance–voltage (C–V) measurements. The effect of UV illumination on the I–V characteristics was also explored and indicated the formation of a highly rectifying, nano heterojunction

• concentrations of dopant, but these results were not suitable for the above atomic ratio, which was determined after optimization. Device fabrication The p-type ZnO thin film was formed on the n-type Si substrate using a dip coating technique with an immersion rate of 9 mm/s, a dwell time of 20 s, and a

Towards bottom-up nanopatterning of Prussian blue analogues

• Virgile Trannoy,
• Marco Faustini,
• David Grosso,
• Sandra Mazerat,
• François Brisset,
• Alexandre Dazzi and
• Anne Bleuzen

Beilstein J. Nanotechnol. 2014, 5, 1933–1943, doi:10.3762/bjnano.5.204

• surfaces and therefore their selective functionalization in the following. The second step is the deposition through dip-coating of an ethanolic solution of titanium molecular species containing block copolymers to obtain an ordered nanostructured organic–inorganic hybrid layer. The third step is a thermal

• samples resulting from this first step and corresponding to the different thicknesses are called Au10, Au20 and Au50 in the following (see below in Table 1). The second step is the deposition by dip-coating of an ethanolic solution of titanium molecular species containing block copolymers micelles that

• after evaporation are self-assembled to obtain an ordered nanostructured organic–inorganic hybrid layer. The solution for dip-coating was prepared by dissolving 37.5 mg of polybutadiene-block-poly(ethylene oxide) (Mw(PB) = 22000 g·mol−1, Mw(PEO) = 15500 g·mol−1) in 9.85 g of EtOH and 0.5 g of H2O at 70

An insight into the mechanism of charge-transfer of hybrid polymer:ternary/quaternary chalcopyrite colloidal nanocrystals

• Parul Chawla,
• Son Singh and
• Shailesh Narain Sharma

Beilstein J. Nanotechnol. 2014, 5, 1235–1244, doi:10.3762/bjnano.5.137

• technologies owing to their unique mechanical flexibility for tailored applications [1][2]. A variety of non-expensive techniques for the processing of OPVs such as dip-coating, screen printing, ink-jet printing etc. has added to their versatility [3][4]. However, as compared to conventional inorganic solar

Template-directed synthesis and characterization of microstructured ceramic Ce/ZrO₂@SiO₂ composite tubes

• Jörg J. Schneider and
• Meike Naumann

Beilstein J. Nanotechnol. 2014, 5, 1152–1159, doi:10.3762/bjnano.5.126

• -precipitation for the preparation of powders [13], impregnation [9], dip-coating [5], or hydrothermal synthesis [4], sol–gel synthesis routes have been widely employed for the preparation of CexZr1−xO2 solid solutions [14]. Pure aqueous sols or sols stabilized by the addition of organics, e.g., surfactants

Cyclic photochemical re-growth of gold nanoparticles: Overcoming the mask-erosion limit during reactive ion etching on the nanoscale

• Burcin Özdemir,
• Axel Seidenstücker,
• Alfred Plettl and
• Paul Ziemann

Beilstein J. Nanotechnol. 2013, 4, 886–894, doi:10.3762/bjnano.4.100

• . The underlying idea is to form such carriers in a suitable solution and to load them with metal precursors. During their deposition onto a given substrate by dip-coating the carriers self-organize into highly ordered hexagonal arrays, which define the position of the metal NP prepared in the next step

• ] carriers. In the following we focus exclusively on Au-precursor (HAuCl4) loaded diblock-copolymers [poly(styrene)(PS)-block-poly(2-vinylpyridine)(P2VP)], which is commercially available from Polymer Source Inc. Canada] that form reverse micelles in toluene. Details on preparing the solution, the dip

• -coating as well as the plasma processes can be found in [6]. Thus, in the present context it may suffice to describe how the method, often addressed as block copolymer micelle lithography (BCML), meets the above requirements. For a given copolymer like PS(1850)-b-P2VP(900) in toluene (the monomer numbers

Tuning the properties of magnetic thin films by interaction with periodic nanostructures

• Ulf Wiedwald,
• Felix Haering,
• Stefan Nau,
• Carsten Schulze,
• Herbert Schletter,
• Denys Makarov,
• Alfred Plettl,
• Karsten Kuepper,
• Manfred Albrecht,
• Johannes Boneberg and
• Paul Ziemann

Beilstein J. Nanotechnol. 2012, 3, 831–842, doi:10.3762/bjnano.3.93

• nanostructuring and magnetism will be discussed in the following subsections. First, we present achievements and limitations of the approach. Monolayers of PS spheres have been prepared by drop-drying [21], spin-coating [22], Langmuir–Blodgett deposition or dip-coating techniques [23]. For PS sizes of 200 nm and

• below it turned out experimentally that a homogeneous monolayer free of large spare, double or multilayer subregions (a prerequisite for integral magnetic characterization) can be achieved best by dip coating. For this purpose, Si substrates were used after hydrophilization in oxygen plasma, resulting

• in SiO2 layer thicknesses of about 5 nm. Commercial PS spheres [24] of average initial diameter of 190 or 95 nm were diluted to 1% w/v in purified water followed by dip-coating at a retraction velocity of typically 1 mm/min. Note that all parameters are slightly adjusted for each PS suspension. One

Controlled positioning of nanoparticles on a micrometer scale

• Fabian Enderle,
• Oliver Dubbers,
• Alfred Plettl and
• Paul Ziemann

Beilstein J. Nanotechnol. 2012, 3, 773–777, doi:10.3762/bjnano.3.86

• dip coating of the substrate (presently n-doped (001)-oriented Si wafers; in general, however, any reasonably flat substrate material is suitable), one single layer of hexagonally ordered micelles is obtained. By exposing such micellar layers to a hydrogen plasma the organic species can be completely

• substrate velocity during dip coating [8]). Furthermore, and most important for the present work, the final position of the Au NPs mirrors the self-assembled hexagonal array of the micellar carriers. This is demonstrated by the SEM image given in Figure 1 showing a typical array of Au NPs on top of a Si

Paper modified with ZnO nanorods – antimicrobial studies

• Mayuree Jaisai,
• Sunandan Baruah and
• Joydeep Dutta

Beilstein J. Nanotechnol. 2012, 3, 684–691, doi:10.3762/bjnano.3.78

• paper handsheets with a base weight of 35 g/m2. The paper sheets were at first seeded with ZnO nanoparticles by dip coating (three times) and the samples were subsequently dried in an oven maintained at 90 °C for 15 min after every successive dipping. The ZnO nanoparticles used for seeding were

Mesoporous MgTa₂O₆ thin films with enhanced photocatalytic activity: On the interplay between crystallinity and mesostructure

• Jin-Ming Wu,
• Igor Djerdj,
• Till von Graberg and
• Bernd M. Smarsly

Beilstein J. Nanotechnol. 2012, 3, 123–133, doi:10.3762/bjnano.3.13

• ) was added, and the final precursor was stirred for a further 6–10 h before dip-coating. This amount of block copolymers was found to be optimum with respect to the mesostructural organization. The MgTa2O6 thin films were deposited on Si wafers by dip coating at a controlled relative humidity of 12

Ceria/silicon carbide core–shell materials prepared by miniemulsion technique

• Lars Borchardt,
• Martin Oschatz,
• Robert Frind,
• Emanuel Kockrick,
• Martin R. Lohe,
• Christoph P. Hauser,
• Clemens K. Weiss,
• Katharina Landfester,
• Bernd Büchner and
• Stefan Kaskel

Beilstein J. Nanotechnol. 2011, 2, 638–644, doi:10.3762/bjnano.2.67

• functionalized polymer spheres coated with hydroxyapatite. Accordingly, we used the surface functionalized PCS/acrylic acid spheres for the growth of a CeO2 shell. Additionally, dip coating of the unfunctionalized PCS spheres in an ethanolic Ce(NO3)3 solution was investigated. Functionalized as well as

Nanoscaled alloy formation from self-assembled elemental Co nanoparticles on top of Pt films

• Luyang Han,
• Ulf Wiedwald,
• Johannes Biskupek,
• Kai Fauth,
• Ute Kaiser and
• Paul Ziemann

Beilstein J. Nanotechnol. 2011, 2, 473–485, doi:10.3762/bjnano.2.51

• can be selectively bonded, and thus the micelles serve as carriers for these precursors, during their own self-assembly, when deposited onto a substrate. The standard way to accomplish such a deposition is optimized dip coating, which leads to a single monolayer of hexagonally ordered micelles. In the

• rate of LCo = 0.5 (LCo is defined as the ratio of ligated Co within the micellar core to the total number of pyridine moieties). The two parameters LCo and (n + m), together with the substrate velocity during dip coating (15 mm/min), determine the particle size and interparticle distance. In the

Organic–inorganic nanosystems

• Paul Ziemann

Beilstein J. Nanotechnol. 2011, 2, 363–364, doi:10.3762/bjnano.2.41

• –inorganic nanosystems enter the stage. Imagine an organic moiety such as a diblock-copolymer, in an appropriate solvent, forming an even more complex building block such as a nanoscaled micelle, which, in turn, can be deposited onto an inorganic substrate such as a Si-wafer by dip coating. Due to the

Extended X-ray absorption fine structure of bimetallic nanoparticles

• Carolin Antoniak

Beilstein J. Nanotechnol. 2011, 2, 237–251, doi:10.3762/bjnano.2.28

• -hexane with surfactants, precipitated out and centrifuged once again. This can be repeated several times, until a stable dispersion of nanoparticles in n-hexane is obtained. The nanoparticles can be brought onto a naturally oxidised Si substrate using the spin coating technique, dip coating or just by

Preparation and characterization of supported magnetic nanoparticles prepared by reverse micelles

• Ulf Wiedwald,
• Luyang Han,
• Johannes Biskupek,
• Ute Kaiser and
• Paul Ziemann

Beilstein J. Nanotechnol. 2010, 1, 24–47, doi:10.3762/bjnano.1.5

• colloidal approach where NPs are formed within a liquid, the preparation of precursor loaded reverse micelles has been developed [36][37]. Here, precursor filled diblock-co-polymers are used to form hexagonally ordered arrays on different substrates by dip-coating [38]. In a second step, NPs are formed on

• of these substrates was employed prior to the deposition of the loaded micelles. The deposition itself was made by dip-coating. For this purpose, the substrate was immersed into the micelle solution and then pulled out under ambient conditions in a controlled way at a fixed velocity. This velocity is

• a critical parameter as it systematically influences the inter-micelle distance on the substrate [55]. The effect was demonstrated on CoCl2-loaded micelles (polymer type: PS(1779)-b-P2VP(857)) deposited onto Si/SiO2 substrates by using a variety of dip-coating velocities in the range 1–90 mm/min

Enhanced visible light photocatalysis through fast crystallization of zinc oxide nanorods

• Sunandan Baruah,
• Mohammad Abbas Mahmood,
• Myo Tay Zar Myint,
• Tanujjal Bora and
• Joydeep Dutta

Beilstein J. Nanotechnol. 2010, 1, 14–20, doi:10.3762/bjnano.1.3

• . Growth of ZnO Nanorods The ZnO nanorods were grown hydrothermally on glass substrates, which were initially thiolated for better attachment of the ZnO nanoparticle seeds [31]. Hydrothermal growth of ZnO nanostructures is a simple and thermally efficient process [27]. Seeding was done by dip coating with

• infrared light radiated by the lamp. At the sample position, 72 klx of light was measured by a luxmeter calibrated to 550 nm. As a control, a similar glass slide (3 × 1 cm) covered with a thin film of ZnO nanoparticles (diameter ≈ 5–7 nm) by a dip coating process was placed in a cuvette with the